Bus or car window construction



Oct. 27', 1942. J. SCHUNK I BUS OR CAR WINDOW CONSTRUCTION Filed Jan.l4, 1941 2 Sheets-Sheet l INVENTOR m E R H P.

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0a. 27, 1942. v J. SCHUNK ,95

' BUS 0R CAR WINDOW CONSTRUCTION Filed Jan. 14, 1941 2 Sheets-Sheet 2llqli. Egg. 14.

INVNTCR LIB sEPE-I BHUNK.

g...;% K mm ATTORNEY Patented Oct. 27, 1942 BUS on CAR WINDOWCONSTRUCTION Joseph Schunk, Newark,,N. J., assignor to The National LockWasher Company, Newark, N. J., a corporation of New Jersey ApplicationJanuary 14, 1941, Serial No. 374,309

14 Claims.

The present invention relates to improvements in bus or car windowconstruction, and more particularly to the vertical channel posts orguideways within which the window sash is supported at its vertical sideedges, the invention contemplating either a window construction in whichthe sash is of the movable type, to be raised and lowered, or of thestationary type.

It is an object of the invention to provide a channel post structureconsisting of a fixed stop member, comprising a base and a projectingflange to be secured to the side vertical frame portion of the windowopening, and a removable stop member attachable to the base of the fixedstop in opposed spaced relation to the fiange to complete the channel,the invention contemplating a structure in which the removable stopmember may be either at the inside or the outside of the windowstructure, depending upon the par ticular requirements of theinstallation. I

Heretofore it has been proposed to provide a removable stop membersecured tothe fixed stop member by means of bayonet slot and pinconnections which are adapted to be engaged and disengaged by verticalmovement between the fixed and movable stops. This type of movable stopis objectionable because of the necessity for employing a hold downscrew, and the fact that exact tolerances have to be maintained in orderto obtain a relatively tight fit, and any appreciable wear upon theengaging surfaces of the bayonet slots and pins will cause looseness.Also an exact dimensional relation has to be maintained between thebayonet slots and pins and the surface of the sill in order to insure aclosed engaging relation between the removable stop and the sill whenthe former is moved vertically downwardly into engaged position.

It is an object of the present invention to provide a channel poststructure in which the removable stop member may be readily engaged withthe base of the fixed stop member to provide a closely engagedinterlocking relation between them, and to provide securing means whichwill securely retain the engaged position of the removable stop member,irrespective of relative wear between the parts and of slightdimensional variations. It is a further object to provide a structurewhich will permit the removable stop tothe vertically moved downwardlywithout limitation, while at the same time maintaining a uniformly tightfit in any position of vertical movement, so that its lower end can bebrought into closely fitting relation with the sill,

Another object is to provide a channel post structure including springmeans arranged to exert side pressure upon the edge of the window sash,and which spring means also acts to provide a spring reaction in theretaining means for the removable stop member, to the end that there isa yieldable engagement of the retaining means with the removable stopwhich permits of dimensional variations while still obtaining thenecessary holding effect. Another object is to provide achannel poststructure in which the exposed surfaces may present a smooth unbrokenappearance, free from screws, and which will preclude tampering with orloosening 'by passengers or unauthorized persons.

A still further object is to provide a structure in which a single formof fixed stop may be used in any of the various arrangements to whichthe invention is adaptable, that is, for either inside or outsideremoval of the window sash, and for either movable or fixed windowsashes, as well as window constructions in which the structure of thecar or bus necessitates different top or header rail arrangements in thewindow frame.

With the above and other objects in view, embodiments of the inventionare shown in the accompanying drawings, and these embodiments will behereinafter more fully described with reference thereto, and theinvention will be finally pointed out in the claims.

In the drawings:

Fig. 1 is a fragmentary elevation of one side of a window construction,according to an exemplary illustrated embodiment of the invention,certain of the parts being broken away.

Fig. 2 is a horizontal sectional view taken along the line 22 of Fig. 1.

Fig. 3 is a perspective view showing the fixed stop member and theremovable stop member in separated relation.

- Fig. 4 is a perspective view of the fixed removable stop membersinassembled relation.

' Fig. 5 is a fragmentary end elevation from the inner side of thechannel structure, the sash and the backing channel strip for the sashbeing removed, this view being on a larger scale than the showing inFigs. 1 and 2.

Fig. 6 is a horizontal sectional view, taken along the line 66 of Fig.5.

Fig. 7 is a horizontal sectional view, taken along the line 7-4 of Fig.5.

Fig. 8 is a horizontal sectional view, taken along the line 8-8 of Fig.1.

Fig. 9 is a fragmentary elevation of one side of a window construction,according to a modified form of the invention especially adapted for astationary sash.

Fig. 10 is a horizontal sectional View, taken along the line l 0-! U ofFig. 9.

Fig. 11 is an end elevation of the open side of the channel post shownin Fig. 9, the window sash and the backing channel strip being removed.

Fig. 12 is a horizontal sectional view, on an enlarged scale, takenalong the line l2l2 of Fig. 11.

Fig. 13 is a fragmentary side elevation showing an extension structurefor the channel post of the type in which the removable stop member isat the inner side of the window.

Fig. 14 is an end elevation of the open side of the channel post shownin Fig. 13.

of a fixed stop member to be secured to the vertical side of the windowframe opening and which may either be outwardly disposed or inwardlydisposed, and a removable stop member to be detachably secured to thefixed stop member, this being either inwardly or outwardly disposeddepending upon the arrangement of the fixed stop member.

As illustrated in Figs. 1 to 8, the fixed stop member is outwardlydisposed and is shown engaged by a movable sash. The fixed stop memberis of generally L-shape in cross-section and comprises a flang I!constituting one leg of the channel, a base 18, disposed at right anglesto the flange I! and inwardly offset from the foot end thereof, andprovided at its forwardly pro- Fig. 15 is a horizontal sectional viewtaken along the line l5l 5 of 'Fig. 13.

Fig. 16 is a fragmentary side elevation showing an extension structurefor the channel post of the type in which the removable stop member isdisposed at the outside of the window.

Fig. 17 is an end elevation of the open side of the channel post shownin Fig. 16.

Similar reference characters indicate corresponding parts throughout theseveral figures of the drawings.

Referring to the drawings, the window sash comprises a glass it], havinga top rail H, a bottom rail i2, and a pair of vertical side straps l3connecting the top and bottom rails, only one of these side straps andthe cooperating channel post or guideway being shown. The side strap isof U-shape channel form in cross-section to receive the Vertical edge ofthe glass, its vertical edges being lb-ent outwardly and rearwardly asat Iii-4d, the rearward ibent portions adapted to engage the edges ofthe felt facing strip I5, of U-shape cross-section, disposed about theside strap. The facing strip l5 forms a part of the window sash and inthe case of the movable sash, adapted to be raised and lowered, moveswith it. Also in the case of the movable sash the bottom rail I2 isprovided at each end with a latch bolt 5 6, which normally projectsoutwardly through a slot in the facing strip 15, and is adapted to beoperated by the usual latch operating mechanism, not shown, carried bythe bottom rail, actuation of the latch adapted to retract the bolt outof engagement with the recessed locking and rack structure in the sidechannel post, as willpresently more fully appear, to permit verticalraising and lowering of the sash.

The vertical edges of the sash are each engaged in a channel post orguideway, and it is with the construction of this channel post orguideway that the present invention is particularly concerned. As willpresently more fully appear the basic structure of this channel post orguideway is such that it is adapted for use in connection with either amovable sash or a stationary sash, and may be arranged in the windowopening so that its removable stop member which is removable for thepurpose of removing and replacing a sash may be disposed either at theoutside or the inside depending upon the particular requirements. In thefollowing description the terms outwardly and inwardly will refer to thedirections toward the window frame and the glass sash respectively, andthe terms rearwardly and forwardly will refer to the directions towardthe outer and inner sides of the window, respectively. The channel postor guideway, according to the invention, consists jecting edge with anoutwardly offset rib portion H), the base of which is in the plane ofthe base or foot end of the flange I"! and constitutes therewith thespaced parallel seating surfaces of the fixed stop member for engagementwith the surface of the vertical window frame pillar 20, there being alongitudinal groove thus formed between the seating surfaces withinwhich a strip of insulating material 2|, such as felt, may be engaged incompressed relation to form a seal between the fixed stop member and theframe when the fixed stop is secured thereto by means of the screws 22,as shown clearly in Fig. 2.

At the forward end of the base I8 there is provided a shoulder 23forming a right angle corner recess with the inner surface of the offsetrib portion 19, and within this rib portion in forwardly spaced relationto the shoulder 23 there is provided a longitudinal groove 24, for thepur- -fiange ll of the fixed stop member is provided at its foot or baseedge with a rearwardly offset longitudinal rib 28 adapted tointerlockingly seat in the groove 24 and to have sliding movementtherein, and is provided at its rearward face adjacent the rib 26, witha longitudinal flange 2'! adapted to seat in the corner recess againstthe shoulder 23 of the base I 8, the flange 21 being preferably slightlyless in thickness than the depth of the shoulder 23, so that its forwardsur- ';face is stepped slightly from the inner surface of the base l8,for a purpose presently to be more fully pointed out.

At suitable intervals the flange 21 of the removable stop member isprovided with cut-out notches 28 for cooperation with retaining lugmeans provided upon the fixed stop member at suitable intervals, thenotches permitting the removable stop member to be engaged with thefixed .stop member by engaging the lug means in the these channelstrips.

notches, the removable stop member adapted thereupon to be slidablymoved longitudinally to bring the flange 21 into interlocking relationbeneath the lug means.

The lug means are supported by the stud mem- 7 bers which position andsupport the backing supporting posts, so that while these differenttypes of posts may be considered modifications of the invention they maybe used concurrently in the same window structure.

, The spring supporting means is shown clearly in Figs. 3 to 6, andconsists of a stud portion 29 provided with a shouldered head 30,slotted for the purpose of engagement by a screw driver, the studportion 29 being engaged in a hole 3! in the base l8 of the fixed stopmember and provided with a threaded bore 32 engaged by a retaining screw33, the head of which projects beyond the hole 3| and thus retains thestud against inward movement. Upon the stud there is engaged a centrallyapertured elongated leaf spring 34, this spring being bowed and adaptedto be compressed when engaged with the backing channel strip of thesash, to exert outward pressure upon the edge of the sash, the head 3|]being engaged within the backing channel strip to position it within thechannel post.

The backing channel strip comprises a vertical face portion 35, and sideportions 36--36, the corners between the face portion and the sideportions being each bent into a fin-like formation 31 disposeddiagonally outwardly to provide spaced vertically disposed line contactbearing surfaces to engage the vertical face of the felt strip l5. Thefree ends of the side portions 35 are bent outwardly at right anglesforming flanges 38-38, thus providing with the corner portions 3'!vertical pockets at each side of the channel strip. Within the verticalpocket adjacent the outside of the window, in this case adjacent theflange l'l, there is engaged a felt weather-seal strip 39 which bearsupon the flange ll. The flanges 3838 are adapted to be engaged by thebowed lead spring 34 and the vertical channel space between the sideportions 36-36 is adapted to be engaged by the heads of the stud posts29 which thus position the backing channel strip and permit of itslateral yielding under the reaction of the compressed spring 29 and thefelt strip 15, during the raising and lowering movement of the window,thus providing a structure which will permit of easy raising andlowering movement while maintaining an effectual sealed relation. Nearits lower end the backing channel strip has a rectangular locking recessforming strip 40 secured by welding in a slot 4| in the face of thestrip, and at suitable intervals above this locking recess there areprovided inclined faced rack forming strips 42 secured by welding inslots 43 in the face 35, the locking recess adapted to receive the boltIE to prevent raising of the window and the rack forming members 42adapted to receive the bolt to support the sash in raised positions.

. The lug member 44 for retaining cooperation with the removable stopmember is of rectangular shape and is provided with a hole 45 engaged bythe stud 29, the lug being disposed against the base I8 of the fixedstop member beneath the spring 29 and its inner edge being disposedagainst the flange H to prevent relative turning of the lug whilepermitting it to have movement upon the stud. As shown clearly in Fig. 6there is a slight clearance between the surface of the lug and thespring when the spring is not compressed, that is, when the sash isdisengaged from the channel post. In the engaged relation of the sash,as shown in Fig. 1, the spring is compressed and thereupon exertspressure upon the lug, pressing it tightly against the base 18 and atthe same time permitting spring reaction to take place when suflicientopposing pressure is exerted upon the lug. At its forward end the lugprojects beyond the shoulder 23 and is bent at a slight inclined angletoward the surface of the rib l9, and preferably this angularly bentprojecting portion is provided at each end with slightly outwardlyflared corners 46-46 produced by indentations 41-41 for the purpose ofproviding guide surfaces to guide the flange 21 into engagement beneaththe lug. This arrangement, in cooperation with the spring reaction andthe spring pressure exerted to hold the lug in engagement with theflange, permits of easy engagement of the flange 21 when the removablestop is slidably moved longitudinally andqprovides an effectualretaining action irrespective of wear and of slight dimensionalvariations that may occur in the different parts.

At points along the channel post where it is desired to secure theremovable strip and where it is not necessary to provide the sashpressing springs 34 the post structure is modified as shown in Fig. '7.In this case the spring 31 is dispensed with and in its place there isprovided a short bowed spring 48, preferably of rectangular form, itsintermediate portion being apertured and engaged beneath the head 30 andits end portions projecting over and engaging the edges of the lug tothus exert constant spring pressure thereon, so that the spring reactionin connection with these lugs is substantially the same as that inconnection with the lugs cooperating with the springs 34.

While the frictional resistance set up between the flange 21 and thelugs engaged therewith under spring reaction is sufficient toeffectually retain the removable stop in place, while at the same timepermitting it to be longitudinally moved to bring the notches 28 intoregister with the lugs for the purpose of removal, it may under certainconditions be desirable to provide a supporting post retaining meanswhich will hold the removable stop under an adjustable frictionalresistance which may be varied as desired between a positive holdingeffect and a relatively loose holding effect, and such retaining meansmay as illustrated in Fig. 1 be employed in cooperation with the twotypes of supporting post means shown in Figs. 6 and '7. It is preferablyprovided either near the lower end of the post or near the upper end, orat both of these points, being in any case at a position where it can bereached by means of a screw driver, when the window sash is raised inthe case of the lower position, or by reaching above the upper end ofthe window sash in the case of the upper position. The lug 44, is thesame as that employed in the structures shown in Figs. 6 and 7 and isengaged by a headed screw post 49 screwed into a threaded bushing 50,secured in a hole 5| in a base l8 preferably by spinning a portion ofthe bushing into a countersink 52in the hole 5|. A spring lock washer 53is engaged between the head of the screw and the lug 44 so that bytightening down the screw the lug may be brought into firm relation withthe flange 27, the degree of frictional resistance to relative movementbeing determined by the degree of tightening of the screw. A hole 54 isprovided in the face 35 of the backing channel strip through which ascrew driver may be engaged to turn the screw.

In Figs. 9 to 12 I have illustrated a modification of the inventionparticularly adapted for use with a stationary sash, although it will beunderstood that the structure may also be employed in connection with amovable sash. The frame for the stationary sash structure includes ahorizontal header rail 55, and the removable stop member 25 makes a fitbetween this header rail and the sill cap 56, so that it is not adaptedto be slidably moved longitudinally as in the case of the firstembodiment. The flange Z? is not provided with notches 28, as in thecase of the first embodiment. Upon the base portion ll! of the fixedstop there are provided a series of post members for positioning andsupporting the backing channel strip engaged with the felt strip l5 ofthe window sash, these stud members each consisting of a cylindricalhead portion Ell for engaging the channel of the backing channel strip,a rectangular cross-section stud portion 58 and a reduced cylindricalshank portion 59 engaged in a hole 60 in the base 18 and secured byriveting over a head 5!. Obviously other suitable securing means may beemployed, as for instance a screw. The stud portion 58 is provided witha threaded hole 62, which is engaged by a screw 63 carried in a hole 64in the removable stop 25, the head 85 of this screw being disposed atthe outer surface of the stop member. I'he screws 53 serve to secure theremovable stop member in its operative position in relation to the fixedstop. In order to remove the removable stop member for the purpose ofremoving or replacing a window sash the screws 63 are backed out to thepoint where they become disengaged from the studs 58, and thereupon thestop may be shifted inwardly to disengage the flange 26 of the removablestop member from the groove 24 of the fixed stop member.

In certain installations in connection with the type of removable stop,as shown in the modification illustrated in Figs. 1 to 8, the car or busstructure is such that sufficient space is provided in the transom topermit of the vertical movement of the removable stop member to engageand disengage it, and in other constructions a sufiicient clearance maybe provided in relation to the header rail of the window frame to permitof this vertical movement. In other constructions, however, as forinstance Where the ceiling structure does not allow for suflicientclearance in the transom, and in installations where the removable stopmember is provided at the outside, it is desirable to provide a fixedextension means at the upper end of the fixed stop member. Extensionstructures for this purpose are shown in Figs. 13 to 17, Figs. 13 to 15showing the extension structure for use where the removable stop memberis provided at the inside, and Figs. 16 and 17 showing the extensionstructure for use where the removable stop member is provided at theoutside.

Referring to Figs. 13 to 15 the fixed stop member is extended above theupper end of the removable stop member 25 and in spaced relation abovethe upper end of the removable stop member, for a distance sufficient topermit of its vertical engaging and disengaging movement, there isprovided an extension stop member of generally L-shape in cross-section,and consisting of a base portion 66 and a flange portion 6?, the baseportion 66 being seated upon the base 3 of the fixed stop member andsecured by the attaching screws 22. At the base of the flange portion 51there is provided a longitudinal rib extension 68 which interlockingseats in relation in the groove 24.

In the case of the removable stop member being provided at the outside,as shown in Figs. 16 and 1'7, the extension member is substantially thesame as that shown in Figs. 13 to 15, but is provided at the lower endof the flange 61 with a downwardly projecting outwardly offset apronportion 64 beneath which there is engaged in overlapping relation areduced thickness upper end portion "iii of the removable stop member,this arrangement providing a sealed connection between the removablestop member and the extension which at the same time permits verticalsliding movement of the removable stop member.

I have illustrated and described preferred and satisfactory embodimentsof the invention, but it will be obvious that changes may be madetherein, within the spirit and scope thereof as defined in the appendedclaims.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. In a window construction, a side channel post for receiving the edgeof a window sash, comprising a fixed stop member adapted to be securedWithin the window opening and including a base portion and a flangeportion projecting therefrom in spaced relation to 'a longitudinal edgethereof, said base portion having an angular recess extending along saidlongitudinal edge including an outwardly offset seat surface and anabutment shoulder, there being a longitudinal groove in said seatintermediate said shoulder and the longitudinal outer edge of said seat,a removable stop member having a base portion parallel to and engageablewith said seat and shoulder and having a longitudinal rib spaced from alongitudinal edge thereof and engageable with said groove. and retainingmeans connected between said removable stop member and said base adaptedto removably retain said removable stop member in engagement with saidseat and groove.

2. In a window construction, a side channel post for receiving the edgeof a window sash, comprising a fixed stop member adapted to be securedwithin the window opening and including a base portion and a flangeportion projecting therefrom in spaced relation to a longitudinal edgethereof, said base portion having an angular recess therein extendingalong said longitudinal edge including an outwardly ofiset seat surfaceand an abutment shoulder, there being a longitudinal groove in said seatintermediate said shoulder and the longitudinal outer edge of said seat,a removable stop member having an inwardly extending seating flangeparallel to and engageable with said seat and shoulder and having alongitudinal rib at its underside spaced from a longitudinal edgethereof and engageable with said groove, and retaining means connectedbetween said removable stop member and said base and disposed over saidseating flange adapted to removably retain said removable stop member inengagement with said seat and groove.

3. In a window construction, a side channel post for receiving the edgeof a window sash, comprising a fixed stop member adapted to be securedwithin the window opening and including a base portion and a flangeportion projecting therefrom in spaced relation to a longitudinal edgethereof, said base portion having an angular recess therein extendingalong said longitudinal edge including an outwardly offset seat surfaceand an abutment shoulder, there being a longitudinal groove in said seatintermediate said shoulder and the longitudinal outer edge of said seat,a removable stop member having an out wardly extending seating flangeparallel to and engageable with said seat and shoulder and having alongitudinalrib at its underside spaced from a longitudinal edge thereofand engageable with said groove, and retaining lug means connected tosaid base and projected over said seating flange adapted to removablyretain said removable stop member in engagement with said seat.

4. In a window construction, a side channel post for receiving the edgeof a window sash, comprising a fixed stop member adapted to be securedwithin th window opening and including a base portion and a flangeportion projecting therefrom in spaced relation to a longitudinal edgethereof, said base portion having an angular recess therein extendingalong said longitudinal edge and forming a seat, there beinga.longitudinal groove in said seat intermediat its longitudinal edges, aremovable stop member having a seating flange engageable with said seatand having a longitudinal rib engageable with said groove, and retaininglug mean connected to said base and projected over said seating flangeto retain said removable stop member in engagement with said seat, saidseating flange having a notch adapted through relative longitudinalmovement of said removable stop member to be brought into register withsaid lug means to permit engagement and disengagement of said removablestop member.

5. In a window construction, a side channel post for receiving the edgeof a window sash, comprising a fixed stop member adapted to be securedWithin the window opening and including a base portion and a flangeportion projectpressing said lug means toward said base member, saidseating flange having a notch adapted through relative longitudinalmovement of said removable stop member to be brought into register withsaid lug means to permit engagement and disengagement of said removablestop memher.

6. In a Window construction, a side channel post for receiving the edge'of a window sash,

comprising a fixed stop member adapted to be secured within the windowopening and including a base portion and a flange portion projectingtherefrom in spaced relation to a longitudinal edge thereof, said baseportion having an angular recess therein extending along saidlongitudinal edge and forming a seat, there being a longitudinal groovein said seat intermediate its longitudinal edges, a removable stopmember having a seating flange engageable with said seat and having alongitudinal rib engageable with said groove, and retaining lug meansconnected to said base and projected over said seating flange to retainsaid removable stop member in engagement with said seat, screw meansadjustably pressing said lug means toward said base, said seating flangehaving a notch adapted through relative longitudinal movement of saidremovable stop member to be brought into register with said lug means topermit engagement and disengagement of said removable stop member.

7. In a window construction, a side channel post for receiving th edgeof a window sash, comprising a fixed stop member adapted to be securedwithin the window opening and including a base portion and a flangeportion projecting therefrom in spaced relation to a longitudinal edgethereof, said base portion having an angular recess therein extendingalong said groove in said seat intermediate its longitudinal edges, aremovable stop member having a seating flang engageable With said seatand having a longitudinal rib engageable with said groove, and retaininglug means connected to said base and projected over said seating flangeto retain said removable stop member in engagement with said seat, screwmeans adjustably pressing said lug means toward said base, said seatingflange having a notch adapted through relative longitudinal movement ofsaid removable stop member to be brought into register with saidlugjmeans to permit engagement and disengagement of said removable stopmember, and spring means interposed be tween said screw means and saidlug means.

8. In a window construction, a side channel post for receiving the edgeof a window sash and a backing channel strip for engaging the edge ofsaid sash within said channel post, said channel post comprising a fixedstop member adapted to be secured within the window opening andincluding a base portion and a flang portion projecting therefrom inspaced relation to a longitudinal edge thereof, a series of post memberssecured upon said base projecting therefrom to engage and position saidbacking channel strip and adapted to retain said strip against outwardmovement during outward removal of the window sash, a removable stopmember engaged with said base along said longitudinal edge, rib andgroove connection means'between said removable stop member and saidbase, and retaining means connected between said removable stop memberand said post means, adapted to removably retain said removable stopmember in engagement with said base member.

9. In a window construction, a side channel post for receiving the edgeof a window sash and a backing channel strip for engaging the edge ofsaid sash within said channel post, said channel post comprising a fixedstop member adapted to be secured within the window opening andincluding a base portion and a flange portion projecting therefrom inspaced relation to a longitudinal edge thereof, a series of post memberssecured upon said base projectin therefrom to engage and position saidbacking channel strip, a removable stop member engaged with said basealong said longitudinal edge, rib and groove con nection means betweensaid removable stop member and said base, a retaining flange on saidremovable stop member adjacent its base, and retaining lug meansconnected to said post means and projecting over said retaining flangeto retain said removable stop with respect to said base, relativelongitudinal movement between said removable stop member and said lugmeans adapted to disengage said lug means from said flange means.

10. In a window construction, a side channel post for receiving the edgeof a window sash and a backing channel strip for engaging th edge ofsaid sash within said channel post, said chan nel post comprising afixed stop member adapted to be secured within the window opening andincluding a base portion and a flange portion projecting therefrom inspaced relation to a longitudinal edg thereof, a series of post memberssecured upon said base projecting therefrom to engage and position saidbacking channel strip, a removable stop member engaged with said basealong said longitudinal edge, rib and groove connection means betweensaid removable stop member and said base, a retaining flange on saidremovable stop member adjacent its base, and retaining lug meansconnected to said post means and projecting over said retaining flangeto retain said removable stop with respect to said base, spring meanscarried by said post means adapted to yieldably press said lug meanstoward said base, relative longitudinal movement between said removablestop member and said lug means adapted to disengage said lug means fromsaid flange means.

11. In a window construction, a side channel post for receiving th edgeof a window sash and a backing channel strip for engaging the edge ofsaid sash within said channel post, said ohannel post comprising a fixedstop member adapted to be secured within the window opening and including a base portion and a flange portion projecting therefrom inspaced relation to a longitudinal edge thereof, a series of post memberssecured upon said base projecting therefrom to engage and position saidbacking channel strip, a removable stop member engaged with said basealong said longitudinal edge, rib and groove connection means betweensaid removable stop member and said base, a retaining flange on said rmovable stop member adjacent its base, and retaining lug means connectedto said post means and projecting over said retaining flange to retainsaid removable stop with respect to said base, spring means carried bysaid post means adapted to engage said backing channel strip undercompression and to yieldably press said lug means toward said base,relative longitudinal movement between said removable stop member andsaid lug means adapted to disengage said lug means from said flangmeans.

12. In a window construction, a side channel post for receiving the edgeof a window sash and a backing channel strip for engaging the edge ofsaid sash within said channel post, said channel post comprising a fixedstop member adapted to be secured within the window opening andincluding a base portion and a flange portion projecting therefrom inspaced relation to a longitudinal edge thereof, a series of adjustablescrew post members secured upon said base projecting therefrom to engageand position said backing channel strip, a removable stop member engagedwith said base along said longitudinal edge, rib and groove connectionmeans between said removable stop member and said base, a res tainingflange on said removable stop member adjacent its base, and retaininglug means conneoted to said post means and projecting over saidretaining flange to retain said removable stop with respect to saidbase, relativ longitu dinal movement between said removable stop memberand said lug means adapted to disengage said lug means from said flangemeans.

13. In a window construction, a side channel post for receiving the edgeof a window sash and a backing channel strip for engaging the edge ofsaid sash within said channel post, said channel comprising a fixed stopmember adapted to be secured within the window opening and in cluding abase portion and a flange portion projecting therefrom in spacedrelation to a longitudinal edge thereof, a series of post memberssecured upon said base projecting therefrom to engage and position saidbacking channel strip, a removable stop member engaged with said basealong said longitudinal edge, rib and groove connection means betweensaid removable stop member and said base, and retaining screw meansconnected between said removable stop and said post means adapted toretain said removable stop with. respect to said base.

14, In a window construction, a side channel post for receiving the edgeof a window sash, comprising a fixed stop member adapted to be securedwithin the window opening and including a base portion and a flangeportion projecting therefrom in spaced relation to one longitudinaledge, an extension stop member secured to said base member at its upperend portion adjacent said edge, and a removable stop member engaged withsaid base portion adjacent said edge for relative vertical slidingmovement, the upper end of said removable stop member being spaced fromsaid extension stop member.

JOSEPH SCHUNK.

